fell asleep during driving

I have just returned from US and I guess have still jet lag (still wake up at 4am 🙂

Anyway yesterday I have been visiting friend of mine and during my way back (arround 11 pm)  I was so sleepy that I fell asleep during my driving. Luckily I had to stoped for red light and “fell asleep” during my waiting for green. So I woke up and there was no car before me and one car horning behind me 🙂